Favorable properties of stillwellite-like LaBGeO5 stimulated many attempts to realize them on an industrial scale. However, the growth of stillwellite single crystals is problematic and, because of strong structural anisotropy, dense stillwellite ceramics were not synthesized to date. Unique properties of cryst. LaBGeO5 may be realized via bulk or grain-oriented crystn. of lanthanum borogermanate (LBG) glasses. Nucleation, bulk and surface crystn. including grain-oriented crystn. of LBG glasses are briefly reviewed. Dependence of crystn. behavior of LBG glasses on the synthesis conditions was found to be closely linked with alumina impurities that suppress texture forming but improve glass-forming ability. The latter offers an opportunity to obtain LBG-based glasses of optical quality, contg. more than 30 mol% rare-earth oxides, for laser and magnetooptical applications. A wide range of active dielecs. in the LBG system covering nonlinear optical nanostructures, planar wave guides and textures with excellent pyroelec. activity are expected to be developed.

Lanthanum borogermanate glass-based active dielectrics / Sigaev, V. N.; Lotarev, S. V.; Orlova, E. V.; STEFANOVICH S., Yu; Pernice, Pasquale; Aronne, Antonio; Fanelli, Esther; Gregora, I.. - In: JOURNAL OF NON-CRYSTALLINE SOLIDS. - ISSN 0022-3093. - STAMPA. - 353(18-21):(2007), pp. 1956-1960.

Lanthanum borogermanate glass-based active dielectrics

PERNICE, PASQUALE;ARONNE, ANTONIO;FANELLI, Esther;
2007

Abstract

Favorable properties of stillwellite-like LaBGeO5 stimulated many attempts to realize them on an industrial scale. However, the growth of stillwellite single crystals is problematic and, because of strong structural anisotropy, dense stillwellite ceramics were not synthesized to date. Unique properties of cryst. LaBGeO5 may be realized via bulk or grain-oriented crystn. of lanthanum borogermanate (LBG) glasses. Nucleation, bulk and surface crystn. including grain-oriented crystn. of LBG glasses are briefly reviewed. Dependence of crystn. behavior of LBG glasses on the synthesis conditions was found to be closely linked with alumina impurities that suppress texture forming but improve glass-forming ability. The latter offers an opportunity to obtain LBG-based glasses of optical quality, contg. more than 30 mol% rare-earth oxides, for laser and magnetooptical applications. A wide range of active dielecs. in the LBG system covering nonlinear optical nanostructures, planar wave guides and textures with excellent pyroelec. activity are expected to be developed.
2007
Lanthanum borogermanate glass-based active dielectrics / Sigaev, V. N.; Lotarev, S. V.; Orlova, E. V.; STEFANOVICH S., Yu; Pernice, Pasquale; Aronne, Antonio; Fanelli, Esther; Gregora, I.. - In: JOURNAL OF NON-CRYSTALLINE SOLIDS. - ISSN 0022-3093. - STAMPA. - 353(18-21):(2007), pp. 1956-1960.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/203273
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